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Wrist and Hand Examina[On Wrist and Hand Examinaon Daniel Lueders, MD Assistant Professor Physical Medicine and Rehabilitaon Objecves • Understand the osseous, ligamentous, tendinous, and neural anatomy of the wrist and hand • Outline palpable superficial landmarks in the wrist and hand • Outline evaluaon of and differen.aon between nerves to the wrist and hand • Describe special tes.ng of wrist and hand Wrist Anatomy • Radius • Ulna • Carpal bones Wrist Anatomy • Radius • Ulna • Carpal bones Wrist Anatomy • Radius • Ulna • Carpal bones Wrist Anatomy • Radius • Ulna • Carpal bones Inspec.on • Ecchymosis • Erythema • Deformity • Laceraon Inspec.on • Common Finger Deformies • Swan Neck Deformity • Boutonniere Deformity • Hypertrophic nodules • Heberden’s, Bouchard’s Inspec.on • Swan Neck Deformity • PIP hyperextension, DIP flexion • Pathology is at PIP joint • Insufficiency of volar/palmar plate and suppor.ng structures • Distally, the FDP tendon .ghtens from PIP extension causing secondary DIP flexion • Alternavely, extensor tendon rupture produces similar deformity Inspec.on • Boutonniere Deformity • PIP flexion, DIP hyperextension • Pathology is at PIP joint • Commonly occurs from insufficiency of dorsal and lateral suppor.ng structures at PIP joint • Lateral bands migrate volar/palmar, creang increased flexion moment • Results in PIP “buTon hole” effect dorsally Inspec.on • Nodules • Osteoarthri.c • Hypertrophic changes of OA • PIP - Bouchard’s nodule • DIP - Heberden’s nodule • Rheumatoid Arthri.s • MCP joints affected most • Distal radioulnar joint can also be affected • Synovis process = swelling, erythema, pain Palpaon • Systemac palpaon is essen.al for accurate diagnosis • Localize points of maximal tenderness • Always compare to opposite side Scaphoid • Prominence at the thenar eminence and distal end of the palpable tendon of the flexor carpi radialis • The scaphoid tubercle represents the palmar projec.on of the scaphoid Scaphoid • Has a proximal pole, a waist, and a distal pole • Proximal Pole • Palpable just distal to Lister’s tubercle Scaphoid • Has a proximal pole, a waist, and a distal pole • Waist • Located within anatomic snuox Scaphoid • Has a proximal pole, a waist, and a distal pole • Distal Pole • Palpable just distal to palmar wrist crease • Becomes more prominent with wrist radial deviaon Lunate • In line with 3rd metacarpal • Palpable within a depression just ulnar to scaphoid proximal pole and ulnar to extensor carpi radialis tendons • Wrist dorsiflexion à Increases depression • Wrist extension à Fullness emerges Triquetrum • Ulnar lobe palpable within the ulnar snuox just distal to the ulnar head/styloid process • Dorsal lobe palpable on dorsal wrist just distal to ulnar head Lunate • In line with 3rd metacarpal • Palpable within a depression just ulnar to scaphoid proximal pole and ulnar to extensor carpi radialis tendons • Wrist dorsiflexion à Increases depression • Wrist extension à Fullness emerges Triquetrum • Ulnar lobe palpable within the ulnar snuox just distal to the ulnar head/styloid process • Dorsal lobe palpable on dorsal wrist just distal to ulnar head Pisiform • Palpable on the palmar aspect of the wrist, just distal to the FCU tendon, which aaches to the pisiform Pisiform • Pisotriquetral ar.culaon can be passively moved • Passive wrist flexion relaxes FCU tendon • Permits examiner to move the pisiform relave to triquetrum Trapezium • Palmar surface palpable just distal to scaphoid tubercle • Dorsal surface palpable in distal aspect of anatomic snuox Trapezoid • Dorsal surface palpable just proximal to the base of the second metacarpal, deep to the ECRL tendon Capitate • Dorsal surface palpable just distal to the lunate and proximal to the base of the 3rd metacarpal, deep to the ECRB and EDC tendons Hamate • Dorsal surface palpable just ulnar to triquetrum and proximal to the 4th and 5th metacarpal bases Hamate • Hook of hamate is palpable on the palmar surface about one finger width distal and ulnar to pisiform Radius • Radial styloid • Lister’s tubercle • Ar.culates with distal ulna Radius • Radial styloid • Lister’s tubercle • Ar.culates with distal ulna Radius • Radial styloid • Lister’s tubercle • Ar.culates with distal ulna Distal Radial Ulnar Joint • Palpable between distal radius and distal ulna • Ar.culates in mo.ons of pronaon/supinaon • Instability can occur at this ar.culaon Dorsal Wrist • Anatomic snuox • Dorsal-radial side of wrist Dorsal Wrist • Anatomic snuox • Bounded by: • Radially - 1st dorsal wrist compartment tendons • Abd pollicus longus, Ext pollicis brevis Dorsal Wrist • Anatomic snuox • Bounded by: • Ulnarly - 3rd dorsal wrist compartment tendon • Ext pollicis longus Dorsal Wrist • Anatomic snuox • Bounded by: • Proximal – Radial styloid Dorsal Wrist • Anatomic snuox • Bounded by: • Distal – 1st metacarpal head Dorsal Wrist • Anatomic snuox • Palpable deep in dorsal snuox • Scaphoid • Radial artery • Superficial radial nerve Dorsal Wrist • Lister’s Tubercle • Bony prominence on dorsal surface of distal radius just proximal to radiocarpal ar.culaon Dorsal Wrist • Lister’s Tubercle • Extensor pollicis longus curves around this tubercle from distal forearm to ulnar thumb Dorsal Wrist Compartments • 1st – Abductor Pollicis Longus, Extensor Pollicis Brevis • 2nd – Extensor Carpi Radialis Longus and Brevis • 3rd – Extensor Pollicis Longus • 4th – Extensor Indicis Proprius, Extensor Digitorum • 5th – Extensor Digi Minimi • 6th – Extensor Carpi Ulnaris Dorsal Wrist Compartments • 1st – Abductor Pollicis Longus, Extensor Pollicis Brevis • DeQuervain’s Tenosynovis Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Palmar Wrist Tendons • Brachioradialis • Flexor carpi radialis • Flexor pollicis longus • Flexor digitorum profundus and superficialis • Palmaris longus • Flexor carpi ulnaris Hand • Metacarpal-Phalangeal Joints (MCPs) Hand • Proximal Inter-Phalangeal Joints (PIPs) Hand • Distal Inter-Phalangeal Joints (DIPs) Range of Mo.on • Wrist • Flexion to 90 • Extension to 60 • Ulnar deviaon to 45 Range of Mo.on • Fingers • All fingers should achieve full flexion and extension • Lag – lack of ACTIVE range of mo.on • Block – lack of PASSIVE range of mo.on Neurologic Examinaon • Median Nerve • Ulnar Nerve • Radial Nerve Neurologic Examinaon • Median Nerve • Locaon • Enters wrist deep to the transverse carpal ligament within the carpal tunnel Neurologic Examinaon • Median Nerve • Innervates • Flexor digitorum profundus and superficialis • Flexor pollicis longus • Pronator quadratus • Pronator teres • Flexor carpi radialis • Abductor pollicis brevis Neurologic Examinaon • Median Nerve • Cutaneous sensaon • Thenar eminence • Palmar aspect of radial 3 ½ fingers • Distal dorsal aspect of radial 3 ½ Neurologic Examinaon • Ulnar Nerve • Locaon • Traverses through Guyon’s canal at wrist • Just radial to pisiform • Lies between pisiform and hook of hamate Neurologic Examinaon • Ulnar Nerve • Innervates • FDP and FDS to ring and liTle fingers • First dorsal interosseus • Abductor digi minimi Neurologic Examinaon • Ulnar Nerve • Cutaneous innervaon • Ulnar 1 ½ digit palmar and dorsal surfaces • Hypotenar eminence Neurologic Examinaon • Radial Nerve • Locaon • Through spiral groove at mid-humerus • Between two heads of supinator (ulnar, humeral) • Dorsal forearm divisions • Deep motor branch • Becomes posterior interosseous nerve • Superficial sensory branch • Crosses wrist at dorsolateral radius Neurologic Examinaon • Radial Nerve • Innervates • Extensors of wrist, thumb, and digits • Supinator Neurologic Examinaon • Radial Nerve • Cutaneous innervaon • Dorsal wrist and hand • Dorsal radial 3 ½ fingers to DIP joints Neurologic Examinaon • Radial Nerve • Dorsal forearm divisions • Deep motor branch • Becomes posterior interosseous nerve Neurologic Examinaon • Radial Nerve • Dorsal forearm divisions • Superficial sensory branch • Crosses wrist at dorsolateral radius Provocave Tes.ng • ATempt to reproduce force/mechanism of injury with manual tes.ng • Perform only aer ruling out fracture Watson Test • Assesses for scapholunate instability • aka Scaphoid Shil Test • Procedure • Place thumb over scaphoid tubercle and index finger over dorsal aspect of scapholunate joint • Apply dorsally directed force with thumb against distal pole of scaphoid while passively moving wrist from ulnar to radial deviaon Watson Test • Posi.ve Test • Sudden, dyskinec shil of scaphoid with dorsal wrist pain • “Catch-up Clunk” • Pathoanatomy • Instability at the scapholunate joint interferes with normal flexion-extension mo.on of the scaphoid during wrist radial-ulnar deviaon Lunotriquetral
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